Toothbrush and method of manufacturing and using the same

ABSTRACT

A toothbrush is provided, including an elongated handle and a brush head supported by the handle. The brush head has a base and a plurality of bristles that extend from the base to form a contact surface elevated from the base. The handle includes a thumb press section that include ridges and flat sections. The toothbrush may include a skeletal structure with an overmoulding encasing the skeletal structure. The overmoulding may form the outer surface of portions of the toothbrush, including the thumb press section.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims the benefit of U.S. Provisional Patent Application No. 62/329,799, filed on Apr. 29, 2016 (pending) and U.S. Provisional Patent Application No. 62/423,674 filed on Nov. 17, 2016 (pending). The entireties of these applications are hereby incorporated by reference for all purposes and made a part of the present disclosure.

FIELD

The present disclosure relates generally to toothbrushes and\or parts thereof, related methods of use, methods of manufacturing toothbrushes and\or parts thereof, and accessories therefor and thereof.

BACKGROUND

A large number of toothbrush designs have been employed and commercialized. Some of these designs have focused on features that are relevant to cleaning and care of the gum areas as well as the teeth. Although some of these designs have proven generally effective, there remains a need for an improved toothbrush that is practical in design and employment, effective in general cleaning of the teeth, and also efficient in cleaning and caring for the gum areas surrounding the teeth. There is a further need for such a toothbrush that can address problem areas associated with gingivitis, particularly the cleaning of the gingival sulcus. Periodontis may arise from gingivitis that initially forms in the gingival sulcus. Problem areas further include the lingual surfaces of the mandibular molars, and the buccal surfaces of the maxillary molars. Some embodiments of the present disclosure address the need for toothbrushes that are particularly suited for addressing one or all of these areas, without sacrificing utility and effectiveness in cleaning the more common areas of the teeth.

SUMMARY

In one aspect of the present disclosure, a toothbrush is provided having an elongated handle and a brush head supported by the handle. The brush head has a base and a plurality of bristles that are arranged in sections. Each section has bristles that extend from the base to form a contact surface elevated from the base. One or more of the sections include bristles that extend from the base to form a contact surface that inclines or declines relative to the base. The sections of bristles further include a first outside section having a contact surface that declines inwardly; an inside section, adjacent the first outside section, having a contact surface that declines outwardly toward the first outside section; and a second outside section positioned adjacent an opposite side of the inside section from the first outside section. The second outside section has a contact surface that declines inwardly toward the inside section. In some embodiments, the inside section(s) and outside section, and the contact surfaces thereon, are configured to engage a target tooth in a predetermined orientation.

In another aspect, the present disclosure is directed to a toothbrush including an elongated handle and a brush head supported by the handle. The brush head has a base and a plurality of bristles that extend from the base to form a contact surface elevated from the base. The handle includes a thumb press section. A stem is coupled between the handle and the brush head.

In some embodiments, the thumb press section includes a plurality of thumb presses. A plurality of ridges may be interposed between the thumb presses. The thumb presses are generally flat thumb presses. Each thumb press may include spaced-apart dimples protruding from a surface thereof. The thumb presses may extend longitudinally along a full length of the thumb press section.

In some embodiments, at least one thumb press may be provided at an angle corresponding to a predetermined orientation of the brush head, such that the angled thumb press is part of a brush head orientation guide. The brush head orientation guide is responsive to the positioning of the brush head such that the brush head is positionable to a predetermined orientation that corresponds with a predetermined orientation of the guide. The thumb press section may include a plurality of angularly spaced-apart thumb presses providing a predetermined orientation guide.

In some embodiments, the ridges may include a plurality (e.g., series) of longitudinally spaced apart ribs protruding from a surface thereof. The ribs may have a curved outer surface or flat outer surface. The ribs are disposed about a longitudinally directed centerline of the handle. Each plurality of ribs may be mutually circumferentially or laterally spaced apart. Each plurality of ribs may be spaced apart by one of the thumb press sections, such that at least one thumb press is located between the generally longitudinally directed ridges.

In certain embodiments, the ribs are grouped into a plurality of longitudinally-distributed series of longitudinally-spaced apart ribs. The plurality of series being mutually spaced apart about an outer surface of said thumb press section. The outer surface of the thumb press section may have a varying diameter such that said ribs have a height relative to the outer surface that varies along a generally longitudinal direction along said outer surface. The ribs may be of varying height along a longitudinal direction (e.g., longitudinal axis of the toothbrush).

In some embodiments, the ribs are disposed on distal portion of the thumb press section proximal to a palm grip section of the handle, such that a forward part of the thumb press section extending forwardly of said distal portion is free of said ribs. In other embodiments, the ridges extend a full length of the thumb press section. The forward portion may form a continuous ridge having a smooth elevation profile. In certain embodiments, the ribs are hollow.

In some embodiments, the handle includes a palm grip section and a valley interface section. The valley interface section is positioned between the thumb press section and the palm grip section. The handle and the brush head are positioned about a longitudinal centerline.

In another aspect, the present disclosure relates to a toothbrush including a skeletal structure. The skeletal structure includes a skeletal structure of a brush head, a skeletal structure of a handle, and a skeletal structure of a stem coupled between the skeletal structure of the handle and the skeletal structure of the brush head. The skeletal structure of the handle includes a palm grip section, a thumb press section, and a valley interface section positioned between the thumb press section and the palm grip section.

The skeletal structure includes a plurality of spaced apart ribs on the handle. The ribs may have a flat outer surface or a curved outer surface, and may be disposed about a longitudinally directed centerline of the skeletal structure. In some embodiments, the ribs include a series of longitudinally spaced apart ribs. The ribs may include a plurality of series of ribs that are mutually circumferentially or laterally spaced apart. In certain embodiments, a slot extends through at least one of the ribs, or through a plurality of the ribs.

An overmoulding may encases at least a portion of the skeletal structure, or an entirety of the skeletal structure. The overmoulding may include a thermoplastic elastomer.

Another aspect of the present disclosure relates to a method of manufacturing a toothbrush. The method includes providing a skeletal structure including a skeletal structure of a brush head, a skeletal structure of a handle, and a skeletal structure of a stem coupled between the skeletal structure of the handle and the skeletal structure of the brush head. The method includes coupling bristles to the brush head of the skeletal structure. The method also includes overmoulding a thermoplastic onto the skeletal structure, thereby encasing at least a portion of the skeletal structure.

The foregoing has outlined rather broadly the features and technical advantages of the present disclosure in order that the detailed description that follows may be better understood. Additional features and advantages will be described hereinafter, which form the subject of the claims. It should be appreciated by those skilled in the art that the conception and specific embodiments disclosed may be readily utilized as a basis for modifying or designing other structures for carrying out the same purposes of the present disclosure. It should also be realized by those skilled in the art that such equivalent constructions do not depart from the spirit and scope of the disclosure. The novel features which are believed to be characteristic of the products, systems, and methods, both as to its organization and method of operation, together with further objects and advantages will be better understood from the following description when considered in connection with the accompanying figures. It is to be expressly understood, however, that each of the figures is provided for the purpose of illustration and description only and is not intended as a definition of the limits of the present disclosure.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the disclosure, and together with the general description given above and the detailed description of the embodiments given below, serve to explain the principles of the disclosure.

FIG. 1 is a side view of a toothbrush according to certain embodiments of the present disclosure;

FIG. 2 is a top view of the toothbrush in FIG. 1;

FIG. 3 is a detail view of a brush head of the toothbrush in FIG. 1;

FIG. 3A is a plan view of the brush head in FIG. 1;

FIG. 3B is a proximal end view of the brush head in FIG. 1;

FIG. 4 is an end view illustration of the brush head properly engaging a target tooth, according to certain embodiments of the present disclosure;

FIG. 4A is an end view illustration of the brush head in FIG. 4 engaging the target tooth prior to adjustment;

FIG. 5 is a simplified proximal end view of a toothbrush illustrating a brush head orientation guide, according to certain embodiments of the present disclosure;

FIG. 5A is a simplified illustration of the toothbrush in FIG. 5 engaging a target tooth while in a predetermined orientation after adjustment;

FIG. 5B is a partial side view of a toothbrush having an alternate brush head orientation guide, according to certain embodiments of the present disclosure;

FIG. 5C is a cross-sectional end view of the toothbrush in FIG. 5B illustrating the brush head orientation guide at a position corresponding to an orientation of the brush head prior to proper adjustment relative to a target tooth;

FIG. 6 is a top perspective view of the toothbrush in FIG. 1 engaging a mandibular molar(s) according to certain embodiments of the present disclosure;

FIG. 7 is a top perspective view of the toothbrush in FIG. 1 engaging a plurality of front teeth according to certain embodiments of the present disclosure;

FIG. 8 is an end view from inside a user's mouth of the toothbrush in FIG. 7 engaging a target canine tooth in FIG. 6;

FIG. 9 is a side view cut-away of a toothbrush illustrating an antiseptic dispensing system according to certain embodiments of the present disclosure;

FIG. 10 is a detail view of a thumb pump component of the antiseptic dispensing system in FIG. 9;

FIG. 11 is a simplified illustration of a “standard grip” as employed by a user of a toothbrush;

FIG. 12 is a perspective view of a toothbrush according to an alternate embodiment of the present disclosure;

FIG. 12A is a reverse perspective and exploded view of the toothbrush in FIG. 12;

FIG. 12B is a detail, cross-sectional view, of a portion of the toothbrush in FIG. 12;

FIG. 12C is a detail illustration of a handle of the toothbrush in FIG. 12, wherein a forward section is disengaged from a main section of the handle of the toothbrush;

FIG. 13 is a perspective view of a toothbrush in accordance with yet another alternate embodiment of the present disclosure;

FIG. 14 is a perspective view of a toothbrush in accordance with yet another alternative embodiment of the present disclosure;

FIGS. 15 and 16 are detailed perspective views of a thumb press section of the embodiment of FIG. 14;

FIG. 17 is a view from the handle end of the toothbrush of FIGS. 14-16;

FIGS. 18A-18F are views of a portion of the thumb press section;

FIGS. 19 and 20 are views of a skeletal structure of a toothbrush in accordance with one embodiment of the disclosure;

FIG. 21 is a cross-sectional view of the handle of the toothbrush of FIGS. 19 and 20, along line A-A of FIG. 20;

FIG. 22 is a view of the skeletal structure of a toothbrush in accordance with one embodiment of the disclosure;

FIGS. 23 and 24 are cross-sectional views of the handle of the toothbrush of FIG. 22; and

FIG. 25 is a view of the handle of the toothbrush of FIG. 22.

Products and methods according to present disclosure will now be described more fully with reference to the accompanying drawings, which illustrate various exemplary embodiments. Concepts according to the present disclosure may, however, be embodied in many different forms and should not be construed as being limited by the illustrated embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough as well as complete and will fully convey the scope of the various concepts to those skilled in the art and the best and preferred modes of practice.

DETAILED DESCRIPTION

The foregoing has outlined rather broadly the features and technical advantages of the present disclosure in order that the detailed description that follows may be better understood. Additional features and advantages will be described hereinafter, which form the subject of the claims. It should be appreciated by those skilled in the art that the conception and specific embodiments disclosed may be readily utilized as a basis for modifying or designing other structures for carrying out the same purposes of the present disclosure. It should also be realized by those skilled in the art that such equivalent constructions do not depart from the spirit and scope of the disclosure. The novel features which are believed to be characteristic of the products, systems, and methods, both as to its organization and method of operation, together with further objects and advantages will be better understood from the following description when considered in connection with the accompanying figures. It is to be expressly understood, however, that each of the figures is provided for the purpose of illustration and description only and is not intended as a definition of the limits of the present disclosure.

It should first be noted that various aspects of the present disclosure are described herein. These various aspects are particularly suited to, or for, a toothbrush of conventional usage. To illustrate the embodiments of the disclosure, much of the following detailed description is provided in the context of that toothbrush and such a toothbrush having multiple advantageous components, each of which represents a novel contribution to the art by the applicant. It is contemplated that various aspects of the toothbrush, i.e., components thereof, may be applicable to other toothbrush designs and/or toothbrush accessories and/or combinations. For example, the brush head configuration detailed below may be integrated with a toothbrush having a different handle design and/or a stem different from that depicted in the figures. The detailed description and exemplary embodiments should not, therefore, be construed as limiting the disclosure to the structures, configurations, and methods described herein.

Certain embodiments of the present disclosure relate generally to toothbrushes that are particularly suited for addressing problem areas associated with gingivitis. In one aspect of the disclosure, the toothbrush provides a brush head that is adapted to engaging a target tooth in a predetermined orientation. In particular, the toothbrush and the brush head are configured to engage a tooth in accordance with the American Dental Association (ADA) approved modified bass technique. The present application is related, in subject matter, to U.S. Pat. No. 8,108,962 (the '962 patent) and U.S. Pat. No. 8,499,401 (the '401 patent), which share a common inventor and common assignee, with the present application. Both the '962 patent and the '401 patent are hereby incorporated by reference in their entirety for all purposes and made a part of the present disclosure.

FIGS. 1 and 2 depict a toothbrush 1 embodying certain aspects of the present disclosure. FIGS. 3 and 4 depict configurations of a brush head 10 as an advantageous component of the toothbrush 1. In this embodiment, the toothbrush 1 includes an elongated handle 13, an angled stem 11, and the brush head 10 connected to the handle 13 by way of the stem 11. For present purposes, the brush head 10 is described as being positioned at or near the proximal end of the toothbrush 1, while the handle 13 is described as extending to a distal end of the toothbrush 1. The stem 11 may be referred to as a component of the brush head 10 rather than a separate component of the toothbrush 1. Thus, the brush head 10 may be described as being connected (e.g., directly connected) to the handle 13.

The top view of FIG. 2 is one that is revealed by rotating the toothbrush 1 in the side view of FIG. 1 a quarter turn or 90° about its center axis ZZ from its start position. For purposes of describing the operation of the toothbrush 1 according to the disclosure, center planes or centerlines XX, YY will be referred to be as being fixed imaginary reference planes having a common intersection or axis ZZ extending through the toothbrush 1 and about which the toothbrush 1 is rotated.

In some embodiments, the stem 11 is positioned at an angle of about 10° from the generally linear handle 13. As is generally known, the position of the stem 11 relative to the handle 13 facilitates placement of the brush head 10 in an advantageous position during use, particularly in accordance with an effective brushing method of the present disclosure. The handle 13 has a generally cylindrical shape that is balanced about a central axis ZZ, and further, about a lateral center plane XX and a vertical center plane YY. The curved and contoured shape of the handle 13 facilitates gripping and manipulation of the toothbrush 1. As shown herein, the shape of the present handle 13 also facilitates positioning and proper use of the brush head 10.

It is noted that embodiments of the disclosure may or may not include a stem 11 or a cylindrically-shaped handle 13 a shown in FIGS. 1 and 2, without departing from the disclosure. For example, in some embodiments, the brush head 10 may extend directly from the linear handle 13 and be positioned about the centerline ZZ. In other embodiments, the brush head 10 may be integrated with a conventional straight and thin handle.

In accordance with the present disclosure, the handle 11 may be further divided into two sections: (1) a palm grip section or palm grip 13 a extending immediately from the proximal end of the handle 13; and (2) an intermediate section 13 b. Each of the handle sections 13 a, 13 b, has a generally curved contour that interface to provide an indented section or valley 13 c. The rounded grip 13 a and the valley interface 13 c generally provides a main grip and fulcrum during manipulation of the toothbrush 1. In this embodiment, the palm grip 13 a is formed from two halves 16 a, 16 b each having a generally convex surface or contour. This shape is particularly accommodating to the fingers and palm as the user grips the handle 13.

As will be further discussed below, the specific shape of the handle 13 also functions as a guide and/or an indicator for positioning the brush head 10 to a predetermined position relative to a target tooth, according to the present disclosure. In particular, the handle 13 provides, in one aspect of the disclosure, an indicating means or guide for proper positioning of the brush head 10 relative to a target tooth. More particularly, the handle 13 provides a means for guiding the brush head 10 to a predetermined orientation.

In this particular embodiment, the intermediate section 13 b is generally formed from an ovoid shaped portion of the handle 13. In one respect, the ovoid portion has four separate cutouts or flat surfaces that provide, in this embodiment, thumb rests 17 a, 17 b, 17 c, 17 d. These flat surfaces 17 a-17 d provide a convenient and effective surface upon which the thumb may apply pressure to the handle 13, and correspondingly to a target tooth engaged by the brush head 10. Accordingly, the section 13 b may also be referred to as the thumb press section 13 b.

As further illustrated by FIGS. 5 and 5A, the flat surfaces 17 a-17 d define a generally box-shaped mid-section 17 of the thumb press section 13 b. As shown in the simplified illustration of FIG. 5, the “box” 17 is generally aligned 45° from the plane of the brush head 10. The box also defines separate ridges or ribs 15 a, 15 b, 15 c, 15 d that are spaced apart by 90°. The ribs 15 a-15 d serve as orientation indicators for the user during use of the toothbrush 1.

Turning to FIG. 5, a thumb T of a right hand of a user is shown resting on one of the thumb rests 17 a of the toothbrush 1. In the orientation depicted by FIG. 5, the toothbrush 1 and, more particularly, the brush head 10, may be referred to as being in the initial or start position. The user applies a standard hand grip to manually grip the handle 13 of the toothbrush 1. The user's four fingers and palm are generally engaged about the palm grip 13 a while the user attempts to find the appropriate thumb rest 17 a-17 d for the thumb T. In the orientation depicted in FIG. 5, the user cannot comfortably accommodate the toothbrush 1 with a standard grip because the palm and fingers would be rotated exceedingly forward of a comfortable position for the hand. An attempt to adjust the grip to a comfortable position ultimately results in the user adjusting the orientation of the toothbrush 1, resulting in the position and orientation of the brush head 10 as depicted in FIG. 5A. In other words, adjustment of the handle 13 by the user to a comfortable position for the handle grip directly results in adjusting the orientation of the brush head 10 to a secondary orientation. This secondary orientation is provided by design and thus, is referred to as a predetermined orientation of the toothbrush 1 and further, the brush head 10. In an important aspect of the disclosure, the predetermined orientation corresponds to an optimal position of the brush head 10 relative to a target tooth.

Accordingly, FIG. 5A illustrates the use of a standard grip by the user and the predetermined orientation of the toothbrush 1 and brush head 10, which accommodates that standard grip. In this predetermined orientation, the box has been rotated approximately 45° and is aligned vertically and laterally. At the same time, the brush head 10 has been rotated from a vertical orientation to the predetermined orientation (a span of about 45°). As will be described below, this predetermined orientation results in proper engagement of the brush head 10 with a target tooth.

It should be noted that, by design, the orientation depicted in FIG. 5A is generally the only orientation that will accommodate the standard grip by the user manipulating the toothbrush 1. Any other orientation, would not comfortably accommodate the user's standard grip. In this respect, the box and thumb rest design of the toothbrush functions as an operating guide to the user, directing the user to the corresponding proper orientation and position of the brush head 10 relative to a target tooth (i.e., a brush head orientation guide). In this respect, the box 17 (including the ribs 17 a-17 d) provided thereon, may be referred to as a brush head orientation guide means. Also, in the predetermined orientation of the toothbrush 1, the thumb is optimally positioned to apply pressure to the toothbrush 1 and correspondingly, to a target tooth engaged by the brush head 10.

A “standard grip” is illustrated in FIG. 11. This illustration shall serve as support for the meaning of a “standard grip” in the context of design and structural features of a toothbrush and/or brush head according to the disclosure. It should also be noted that the meaning and application of this term will be understood by one skilled in the relevant dental or consumer products art without explanation from herein.

In the embodiment illustrated in FIGS. 1 and 2, the palm grip 13 a is approximately 3¾″ long and the thumb press 13 b is approximately 2 3/16″ long. The brush head 10, including the stem 11 extends generally 2 3/16″ from the thumb press 13 b. The stem 11 is positioned at an angle of about 30° from the lateral center line XX of the toothbrush 1 (in FIG. 1).

Turning now to FIGS. 3, 3A, and 3B, a brush head 10 is shown having multiple sections of bristles illustrated in accordance with a primary aspect of the disclosure. FIGS. 3, 3A, and 3B are simplified illustrations provided to facilitate description of embodiments, and should not be construed in any way to limit the disclosure. As shown, the brush head 10 includes three distinct sections or arrangement of bristles: an outside section A1, an inside section B, and a second outside section A2 adjacent a side of inside section B opposite of the outside section A1. As generally known in the art, the brush head 10 is composed of a population of bristles that are clumped or grouped together in tufts 22. The brush head 10 provides a base or platform 20 from which the bristles and the tufts 22 extend outwardly and generally perpendicularly to the base 20 (see e.g., end view of FIG. 3B). The bristles and the tufts 22 may be implanted or attached to the base 20 in a variety of suitable methods known in the art. Each of the bristle sections A1, B, A2 is formed by a plurality of generally equally spaced apart tufts 22. Each tuft 22 is further formed by bristles of a substantially common length. Each tuft 22 (and each bristle in the tuft 22) extends from the base 20 to a free or exposed end. Together with adjacent tufts 22, these exposed ends begin to form an exposed surface. The exposed surface is referred to herein as a “contact surface” because it is intended for directly contacting and engaging the target tooth. As used herein, a “contact surface” is provided by a collection of free ends of bristles that extend generally perpendicularly from the base, whether in groups of tufts or individually. Furthermore, as used herein, the contact surface and the free ends of the bristles are referred to as being “elevated” from the base 20, which means simply that there is a measurable separation (depth, height, or width) from the base 20.

In one arrangement of tufts 22, the tufts 22 in each section are generally aligned to form a row. The rows of tufts 22 in this embodiment are generally provided by bristles having generally the same length. Thus, the tufts 22 along a row extend from the base 20 to a common elevation (relative to the base 20). Referring to FIG. 3B, the elevation of the rows in sections A1, A2, in this particular embodiment, gradually declines with each successive row in a direction toward the center of the base 20 (inwardly direction). In this manner, the rows or tufts 22 form a contact surface C1 and C2 that declines inwardly toward the inside section B.

The inside section B further includes tufts 22 and further, rows of tufts that are distinct from those of the outside sections A1, A2. The inside section B consists of tufts 22 that extend outwardly to form a contact surface D that, in one embodiment, is separate and disjointed from the outside contact surfaces C1 and C2. In an embodiment, the elevation of the contact surface D also varies across the inside section B, and does not provide a single planar surface. The contact surface D is actually two separate but congruent planar surfaces. Simply, the tufts 22 are taller with each successive row toward the center. As a result, two surfaces meet at a middle ridge E. The contact surface D is also referred to as declining outwardly from the ridge E toward each of the outside sections A1 and A2.

Moreover, because the tufts 22 of the inside section B are generally longer or taller than those of the outside sections A1, A2, the contact surface D is elevated above the outside contact surfaces C1, C2. In this embodiment, a side wall 30 of the inside section B is exposed and juxtapositioned with the outside sections A1, A2 and the contact surfaces C1, C2, thereon. Referring to FIG. 3B, the juxtapositioning of the sidewall 30 with the contact surfaces C1, C2, provides a V-shape space or profile, V′ (simply, “V-space V′”) that becomes particularly functional during use of the toothbrush 1. The V-space V spans up to approximately 45°.

In an alternative embodiment of the brush head 10 as best illustrated in FIGS. 5 and 5A, the contact surfaces C1, C2, terminate or meet with the inside contact surfaces D. In these embodiments, the inside section B does not provide an exposed sidewall 30. Contact surfaces C1, C2, and D have a common low point or lowest elevation. Accordingly, the V-space V provided by this alternative brush head 10 is defined by the profiles of the inside contact surface D and the outside contact surface C1 or C2 and the adjacent contact surface D.

In further embodiments, the contact surfaces C1, C2, and D may have a smoother, more rounded profiles. The interface between the contact surfaces may also be more gradually, with less of an abrupt angle. Such a brush head configuration would still provide an advantageous V-space, in accordance with the present disclosure.

Furthermore, the bristles or tufts 22 of the outside sections A1, A2 may be made stiffer than the bristles or tufts 22 of the inside section B. This difference in stiffness may be accomplished by varying the length or width of the respective bristles, using different materials, and/or employing other means generally known in the art.

More preferably, the bristles of the inside section B is provided a color different from the colors of the bristles of the outside sections A1, A2. For example, the bristles of the inside sections, or at least the contact surfaces D of the outside section, may be provided in red, while the bristles or contact surfaces C1, C2, of the outside sections are provided in white. As will be further described below, these color and stiffness distinctions provide functional advantages and yet another brush head orientation guide according to the present disclosure. Some of these functional advantages may be evident in the illustrations of FIGS. 4 and 6-8, and the descriptions provided below.

Generally, the physical and geometrical configuration of the inside and outside sections, particularly the relative positioning of the respective contact surfaces, are adapted for engaging a target tooth, such as a mandibular molar. More specifically, the multi-section brush head configuration is configured to engage the target tooth in a predetermined manner. This predetermined manner, or more specifically, predetermined position or orientation, functions as a guide and then, as an indicator to the user of proper position of the brush head during brushing. More specifically, the brush head, through its multiple sections and contact surfaces, is configured to engage the target tooth in a particularly suitable orientation of the brush head. In accordance with the disclosure, the brush head configuration corresponds with the profile of the target tooth in a manner and orientation that is particularly effective in brushing and caring of the tooth and gum areas. In particular, the physical configuration of the brush head, while in the predetermined orientation positions the inside section and more particularly, the ridge, to penetrate the gingival sulcus.

Now turning to FIG. 4, the brush head 10 according to the present disclosure is shown positioned at the predetermined orientation. In this respect, the brush head 10 is shown in its proper or predetermined orientation, relative to the target tooth M, which in this case is a mandibular molar. In this predetermined orientation, the V-space V of the brush head 10 accommodates the top curvature and dual surfaces of the mandibular molar M. The outside contact surface A1 is placed against a gingival side of the target tooth M, when the V-space accommodates the target mandibular molar M. In correspondence, the contact surface D of the inside section is placed against an occlusal surface of the molar M, while the bristles proximate the ridge E of the inside section D penetrates the gingival sulcus. Meanwhile, the shorter bristles of the outside section A1 scour the tooth's occlusal or biting surface. In this way, the brush head 10 is used more effectively to clean and care for the mandibular molar M and the surrounding gum areas.

Because of the geometric configuration of the brush head 10, particularly the provision of the V-space V, the predetermined orientation shown in FIG. 4 is readily recognized by touch to the user. As illustrated in FIG. 4, the v-space corresponds with the corner and curvature of the mandibular molar, thereby wedging or locking the V-space and the brush head against the molar, in the proper orientation.

To illustrate further, FIG. 4A depicts a brush head 10 improperly positioned relative to the target tooth M. In this position, the inside section A1, A2 of the brush head 10 is not engaging and penetrating the gingival sulcus. To further contrast, the brush head 10 is generally resting atop the tooth M by way of thumb pressure, but not engaging the tooth M. The brush head 10 is tentatively engaging the tooth M and easily slips off the tooth's surface. By rotating and/or adjusting the brush head 10 until it engages and locks on to the profile of the tooth M, the brush head 10 is brought to the predetermined orientation relative to the target tooth M, as shown in FIG. 4.

In some embodiments, the bristles of the inside sections are longer than those of the outside sections so as to more easily penetrate the gingival sulcus. In this manner, the bristles in the inside section also more effectively brush against the generally vertical side wall of the molar. The brush head 10 is applied to the mandibular molar and the adjacent gingival sulcus. The bristles are advantageously positioned for cleaning the tooth's occlusal surface and under the adjacent gingival sulcus.

To further aid and guide the user, the toothbrush 1 is provided another means for guiding the brush head 10 to the predetermined orientation to the user. By distinguishing the colors of the outside section and the inside section, the user can observe how close the brush head 10 is to the predetermined orientation. In the predetermined orientation, the white color of the bristles of the outside section A1, A2 will be well separated and independent of the red bristles of the inside section C. Thus, if the user observes meshing and mixing of different colors, rather than separation, that becomes an indication to the user that the orientation of the brush head 10 must be adjusted. The user may make several adjustments as required to create the color separation, and thus positioning the brush head 10 in the proper and predetermined orientation.

To further illustrate, in FIG. 4A, the colors of the inside section is mixed in and meshes with the colors of the outside section. In contrast, FIG. 4 clearly shows separation between the colors of the bristles of the inside section from the colors of the bristles of the outside section A1. In this respect, color arrangement of the brush head 10 may be characterized as providing a visual means for guiding the brush head 10 into the predetermined orientation (i.e., a visual or observable brush head orientation guide).

FIG. 6 further illustrates the predetermined position and orientation of the brush head relative to a target mandibular tooth M. From the top view, only the color of the brushes of the outside section A1, A2 is readily evident.

In FIGS. 7 and 8, the toothbrush 1 is shown used for brushing the front teeth F. In FIG. 8, the brush head 10 is shown properly engaging a canine front tooth F. In the proper orientation, the color brushes of the inside section again A1 properly engages the gingival side of the canine tooth F, while the bristles approximate the ridge E of the inside section B effectively penetrates the gingival sulcus. At the same time, the contact surface C1, C2 of the outside section A1, A2 engages the top of the canine tooth.

In a further aspect of the present disclosure, the toothbrush 1 includes yet another means for indicating or guiding the user to proper orientation of the brush head relative to a target tooth (brush head orientation guide). In this embodiment, the toothbrush 1 includes a readily observable guide for the user. Returning to FIG. 5, the end profile of the toothbrush 1 provides a ring 40 that is directly observable to the user. The brush head orientation ring 40 also includes indicator lines 45 a, 45 b, 45 c, 45 d. In the flat or initial position of the toothbrush 1 as depicted in FIG. 5, the lines 45 a-45 d are at the 45° positions of the ring 40. In FIG. 5A, the toothbrush 1 has been rotated to place the brush head 10 in the predetermined orientation. In this view, the brush head 10 is at an orientation corresponding to that shown in FIG. 4. At this predetermined orientation, the indicator lines 45 a-45 d have been rotated to align with the horizontal and lateral centerlines. This alignment, and the rotation required to arrive in alignment, are readily observable by the user. Thus, the user can rotate and adjust the toothbrush 1 (and the brush head 10) until the indicator lines 45 a-45 d align with the centerlines XX, YY, thereby indicating placement of the brush head 10 in the predetermined orientation.

It will become apparent that a user of the toothbrush 1 will most likely use the V-space V and/or the box 17 to first physically guide the brush head 10 to the proper orientation and then, check secondary means to confirm such placement. In this context, the color distinction provided by the bristles of the brush head 10 and the orientation ring 40 function as secondary means of guiding the brush head to the predetermined orientation.

It should be noted that in illustrations and discussions provided herein, the indicator lines 45 a-45 d, as well as the span of the V-space V have been provided at approximately 45°. It should be noted that the V-space may be adjusted to another skewed angle different from 45°. In these case, the angular spacing of the indicator lines 45 a-45 d will vary accordingly.

Referring to FIGS. 5B and 5C, an alternative indicator means 550 is shown as a separate component. The indicator means 550 is provided in the form of a cap having a hollow tube 550 a, 550 b, an angulation ring 540, and indicator lines 545 a-545 d. By way of the tube 550 a, the indicator means 550 may be fitted about the distal end of a handle 13 of a toothbrush 1. The tube 550 a would be readily removed from the handle 13, as required by the user. The angulation ring 540 is similar to that previously described in respect to FIGS. 5 and 5A in that the ring 540 is an indicator to the user of the orientation of the brush head 10 relative to a target tooth. This particular embodiment does provide additional benefit in that the orientation guide 550 also functions as a stand for the toothbrush 1. In this way, the user may rest the toothbrush 1 on a surface using the guide 540 as a base.

Referring now to FIG. 9, an alternative embodiment is provided in the form of toothbrush 901. The toothbrush 901 includes an elongated handle 913, a brush head 910, and an angled stem 911 connecting the brush head 910 to the handle 913. It should be noted that this embodiment may employ one or more of the features previously illustrated and described in respect to FIGS. 1-8. Among these, of course, are a multi-sectioned brush head 910 and/or a multi-colored brush head and/or one or more of the brush head orientation guides previously described.

The inventive toothbrush 901 includes a pneumatic, manually-operable fluid dispensing system to assist proper brushing and cleansing of a target tooth. The fluid dispensing system may store and dispense an antiseptic mouthwash to assist in the cleaning of the gum areas of target teeth. The fluid dispensing system includes a reservoir 921 formed within a hollowed handle 913. The fluid dispensing system further includes a conduit 922 fluidly communicating antiseptic from the reservoir 921 to the brush head 910. The conduit 922 may be a polymeric tube having an inlet 922 a communicating with a distal region of the reservoir 921 and an outlet(s) 922 b provided in the base 920 of the brush head 910. The outlet 922 b may be further included with a tube extension that facilitates dispensing of the antiseptic through the multi-sectioned brush head 910 and onto the target tooth and, more particularly, the surrounding gum areas. As shown in FIG. 9, the conduit 922 also extends through the length of the handle 913 and the stem 911 before arriving at the brush head 910. In alternative embodiments, the conduit 922 may be directed substantially inside of the reservoir 921.

The fluid dispensing system further includes a pump 925 located on the distal end of the handle 913. The pump 925 is also equipped with a one-way check valve. As further illustrated in FIG. 10, the pump provides a deformable bulb that may be thumb-operated to increase the pressure in the reservoir 921 by adding air volume. As generally known in the art, the integrated one-way valve also prevents escape of fluid and air from the reservoir. The distal end of the handle 913 may be provided with a removal plug or threaded cap in which the pump 925 is integrated. In this way, the plug may be removed to provide access to the reservoir 921. Furthermore, o-rings may be placed about and adjacent the plug or cap to seal the reservoir. An additional o-ring is preferably placed in and about a threaded or plug connection 941 between the handle 913 and a removable stem 911 to effectively seal the reservoir at the proximal end.

The fluid dispensing system further includes a manually operable valve 931 for controlling release of antiseptic from a pressurized reservoir 921 and directing the antiseptic via the conduit 922 to the brush head 910. The valve 931 may be any suitable valve means, such as a pinch valve having a bulb actuator. The valve 931 is located between the brush head 10 and the distal end of the handle 913, i.e., in the thumb grip section 913 b, so as to accommodate the normal placement of the user's thumb during brushing. In this way, the valve 931 may be easily thumb operated (i.e., a thumb valve 931). Moreover, the valve 931 is engageable with the conduit 922 to restrict or allow fluid flow there-through. It should be noted also that during brushing, the handle and reservoir will be tilted slightly such that the distal end of the handle 913 will be lower from the area of the valve 931. In further embodiments, the fluid dispensing system is integrated with handle designs such as those depicted in FIGS. 2-4. In these embodiments, the thumb valve is advantageously located on the appropriate thumb rest 17 a-17 d, thereby facilitating integration of the dispensing operation with the positioning of the brush head 910.

Accordingly, the fluid dispensing system embodies a manually-operable valve 931, the operation of which is facilitated by the design and shape of the handle and the inclusion of key components. By placing the inlet 922 a near the distal end, positive liquid head may be created by vertically positioning the toothbrush 910. Additional head may be created by operation of the thumb-pump 925.

It is contemplated that a toothbrush 1 according to the disclosure may include a fluid dispensing system as illustrated in FIGS. 9 and 10, a brush head configuration as illustrated in FIGS. 3 and/or 4, and/or one or more brush head orientation guides as illustrated in FIGS. 1-8 and described previously herein. During normal use of the toothbrush 1, a user may employ the V-space V and the box 17 to properly orient the brush head 10 relative to a target tooth. To further confirm proper orientation, the user may also use the color distinctions between the sections of the brush head 10 as a visual guide means, and/or an angulation ring 40. After proper adjustment, the brush head 10 may be employed to brush the target tooth in accordance with the ADA approved modified bass technique.

During such brushing, the user may operate the valve 931 to dispense and antiseptic mouthwash from the toothbrush through the base 920 of the brush head 10 and into the gingival sulcus. In this manner, the sulcus may be flushed with antiseptic, while the gum areas (and the tooth) may be mechanically cleaned with a particularly advantageous brush head and bristle, and contact surfaces thereof.

Thus, in a further aspect of the disclosure, a toothbrush is provided with an integrated fluid dispensing system. An antiseptic mouthwash is stored in the reservoir for use during a secondary brushing session and for flushing the gingival sulcus, thereby killing more bacteria than brushing alone. The use of the pneumatic-operated dispensing system with the brush head ensures that the sulcus is properly deflected from the target tooth and allows the antiseptic mouthwash to flush the sulcus. This allows for a reduction of the number of inflammatory causing bacteria. When an individual rinses only with a mouthwash, the sulcus is not deflected laterally away from the tooth. Consequently, bacteria located in the lower ⅓ of the sulcus may not be removed. By deflecting the sulcus (through application of the brush head), and then, flushing the area with antiseptic, more bacteria may be removed. A brushing procedure utilizing disclosed toothbrush may be employed as follows: (a) brush with toothpaste two minutes; (b) rinse; (c) brush with the brush head positioned in the predetermined orientation for forty-five seconds and periodically employing an antiseptic flush; and (d) floss.

Referring now to FIGS. 12, 12A, 12B, and 12C, a toothbrush 1201 is depicted in accordance with an alternative embodiment, wherein like elements are referenced by like reference numerals. Like the toothbrushes in previous embodiments, the toothbrush 1201 includes a brush head 1210, a stem 1211, and an elongated handle 1213 into which the stem 1211 is removably secured. The elongated handle 1213 may be further divided into a palm grip section 1213 a, an intermediate or thumb press section 1213 b, and a valley interface 1213 c therebetween. The palm grip section 1213 a in this embodiment is generally symmetric and cylindrical. The intermediate or thumb press section 1213 b includes a thumb press box 1217 having a series of ridges 1215, and concavely shaped thumb presses or surfaces 1217. The concave presses 1217 provide a convenient and effective surface upon with the thumb may apply pressure to the handle 1213, and correspondingly to a target tooth engaged by the brush head 1210, in a similar manner as described previously. As also similarly described previously, the “box” 1217 is generally aligned 45 degrees from the plane of the brush head 1210. The ridges 1215 may serve as orientation indicators for the user during use of the toothbrush 1201. Notably, the box 1217 in this embodiment does not extend to the proximal end of handle 1213, and instead stops short, thereby defining a forward section 1213 d positioned between the box 1217 and the stem 1210.

As in previous embodiments, the handle 1213 is preferably generally hollow so as to contain internal components of the toothbrush 1201, and more particularly, components of a manually and user-operable fluid dispensing system of the toothbrush 1201. FIG. 12A provides an exploded view of the toothbrush 1201, further revealing the internal components of a fluid dispensing system generally situated within the thumb press section 1213 b and forward section 1213 d of the handle 1213. FIG. 12B provides a further detailed illustration of the components of the fluid dispensing system according to this embodiment. The primary components of the fluid dispensing system are generally situated within the hollow of the forward section 1213 d, and within the hollow of, at least, the front or forward portion of thumb press section 1213 b. The fluid dispensing system includes an inflatable bladder 1221 that functions as a reservoir of the desired fluid, e.g., antiseptic. In FIG. 12B, the bladder 1221 is shown in a partially inflated state. In a fully inflated state, the bladder 1221 according to various embodiments may fill a substantially larger portion of the hollow of the handle 1213.

The fluid dispensing system further includes a ball valve 1253 shown seated to block a primary port 1263 of the bladder 1221. The port 1263 communicates the bladder 1221 with a sealed forward container 1265 of the reservoir. The sealed container 1265 is substantially smaller than the inflated bladder 1221 and is generally defined by the inside surface of the forward section 1213 d and the base of stem 1211.

FIG. 12C illustrates a feature of the toothbrush 1201. The container 1265 and forward section 1213 d of the handle 1213 are designed and fitted to removably detach from the rest of the handle 1213. In this embodiment, the bladder 1221 is secured to the container 1265 (thereby maintaining the sealed reservoir) and is movable therewith. The container 1265 and the bladder 1221 together provides a pressurized reservoir of antiseptic that is situated to fluidly communicate with a conduit 1222 that leads to the brush head 1210, as described previously.

The ball valve 1253 is mechanically connected with a rigid member or line 1255 that is directed outwardly from the center of the container 1265 and through the outside surface of the forward section 1213 d (i.e., at the handle 1213). As shown in FIG. 12B, the distal end of the rigid line 1255 is situated in a recess that is covered by a button 1251. The button 1251 is positioned on the outside of the forward section 1213 d and may be depressed to move the rigid line 1255. Upon engagement and depression by the user, the button 1251 moves the rigid line 1255 to unseat valve 1253. As a result, the port 1263 is opened, thereby communicating antiseptic into and pressurizing the container 1265, and then further, fluidly communicating with conduit 1222. By releasing button 1251, the rigid line moves and reseats ball valve 1253 to block the port 1263. Thus, the button 1251 and the rigid line 1255 attached therewith provide a user-operable mechanism or means for operating the fluid dispensing system of the toothbrush while the toothbrush 1201 is in brushing mode. Furthermore, the mechanism or means (including button 1251) is provided at a location on the handle 1213 so as to be readily accessible and manually-operable simultaneous with the user's operation of the handle 1213.

FIG. 12B also illustrates a stem release system of this embodiment. This stem release system includes a button 1257 (also accessible at the handle) that may be depressed to move a lever 1259. The lever 1259 is a rigid, elongated member having a turned end section. The turned end section of lever 1259 engages an extended latch 1261 that is connected with the stem 1211. By depressing button 1257, the lever 1259 disengages the latch 1261, which disengages stem 1211 and allows stem 1211 to be removed from the handle 1213. In further embodiments, the stem 1211 may be removed to reveal an opening into which a bottle of antiseptic may be engaged. In this manner, the bottle of antiseptic may be used (i.e., by squeezing) to refill the bladder 1221, and, at the same time, pressurize the fluid dispensing system.

In further embodiments, the forward section 1213 d may be eliminated by extending the thumb press section 1213 b substantially to the proximal end of the handle 1213. In this way, the sealed container 1265 is located within the thumb press section 1213 b. Furthermore, the buttons 1251, 1257 may be located underneath the thumb press section 1213 b, preferably at a position forward of the thumb press surfaces 1217 a-1217 d.

Referring now to FIG. 13, a toothbrush 1301 is depicted in accordance with yet another embodiment, wherein like elements are indicated by like reference numerals. The toothbrush 1301 employs a brush head 1310, a stem 1311, and a handle 1313 that is generally more curved than the handles in previously described embodiments. Handle 1313 includes sections, of which 1313 a and 1313 c are indicated. In comparison to previous embodiments, the handle 1313 exhibits a more ergonomic approach. The handle 1313 fits firmly in the palm of the hand and the thumb press section 1315 allows for ergonomic placement of the thumb in one of the four flat areas (1317 a,b) on 1317. In an embodiment, the fluid release button is located on the crest between flats 1317 a and 1317 b. A secondary button serving the same purpose may also be located 180 degrees from this button on the opposite side, thereby allowing two positions from which to dispense antiseptic. The toothbrush 1313 also provides for buttons similar in function as the buttons 1251, 1257 in FIG. 12. In this embodiment, the buttons (not shown) are located in the thumb press section 1315 of the toothbrush 1301. The buttons (not shown) may be located just forward of the thumb press surfaces (e.g., thumb press surface 1317 a and 1317 c), such that the buttons may be readily accessed and operated by the user.

FIGS. 14-17 depict an embodiment of a toothbrush according to the present disclosure, as well as illustrate a method of manufacture or use of same, wherein like elements are indicated by like reference numerals. Like the toothbrushes in previous embodiments, the toothbrush 1401 includes a brush head 1410, a stem 1411, and an elongated handle 1413 into which the stem 1411 is removably secured.

The elongated handle 1413 may be further divided into a palm grip section 1413 a, an intermediate or thumb press section 1413 b, and a valley interface 1413 c therebetween. The palm grip section 1413 a, in this embodiment, is generally symmetrical and cylindrical. The intermediate or thumb press section 1413 b is generally rectangular and includes a thumb press box 1417 having a series of ridges 1415, and flat thumb presses 1417 a-d. The flat thumb presses 1417 a-d provide a convenient and effective surface upon which the thumb may apply pressure to the handle 1413, and correspondingly to a target tooth engaged by the brush head 1410, in a similar manner as described previously. The flat thumb presses 1417 a-d may also include dimples 1480 to provided better thumb engagement. Dimples 1480 may be spaced apart from one another. As also similarly described previously, the thumb press box 1417 is generally aligned 45 degrees from the plane of the brush head 1410. The ridges 1415 may serve as orientation indicators for the user during use of the toothbrush 1401.

As in previous embodiments, the handle 1413 is generally hollow so as to contain internal components of the toothbrush 1401, and more particularly, components of a manually and user-operable fluid dispensing system of the toothbrush 1401.

FIGS. 15 and 16 provide a close-up perspective view of thumb press section 1413 b. Each ridge 1415 includes a forward ridge portion 1415 a and an aft ridge portion 1415 b. “Forward” and “aft” as used with respect to ridge portions 1415 a and 1415 b describe their location relative to the cross-sectional area of thumb press box 1417. Forward ridge portion 1415 a extends from the maximum cross sectional area of thumb press box 1417 to the stem 1411. Aft ridge portion 1415 b extends from the valley interface 1413 c to the maximum cross sectional area of thumb press box 1417. The maximum cross sectional area of thumb press box 1417 can be identified in the embodiment of FIGS. 14-17 by the edge between adjacent planar surfaces in each thumb press box 1417. For example, thumb press box 1417 a (FIG. 16) includes two different planar surfaces (1417 a-1 and 1417 a-2). Edge 1465 between surfaces 1417 a-1 and 1417 a-2 identifies the maximum cross-sectional area.

In the embodiment shown in FIGS. 14-17, ridges 1415 include ribs 1470. In some embodiments, ribs 1470 are positioned on ridges 1415. Alternative embodiments may include ribs extending onto and even across flat thumb press surfaces 1417. Ribs 1470 are shown extending perpendicular to the central axis of the handle 1413. However, in alternative embodiments, ribs 1470 may extend parallel or in any other direction relative to the central axis of the handle 1413. Each rib 1470 may be spaced apart from adjacent ribs 1470.

Ribs 1470 are shown along the full length of the aft ridge 1415 b and a portion of the forward ridge 1415 a. In alternative embodiments, the ribs may extend the full length of both the forward and aft ridges 1415, part of the both the forward and aft ridges 1415, or combinations thereof. Further, ribs 1470 are shown as being generally the same on all four ridges 1415 a-d. In alternative embodiments, ribs 1470, may not be the same on all four ridges 1415 a-d.

FIG. 17 shows the embodiment of FIG. 14 viewed from the handle end of the toothbrush 1401. Brush head 1410 (without bristles) can be seen at the bottom of FIG. 17. In the embodiment of FIG. 17, ridges 1415 extend beyond the box shape defined by flat thumb presses 1417 a-d. However, in alternative embodiments, ribs 1470 may not extend beyond the box shape and may even extend into the box shape.

Ribs 1470 are shown extending circumferentially from central axis of the handle 1413. In the embodiment of FIGS. 14-17, the point of maximum rib extension from the central axis can be seen by reference to line 1475, which is parallel to the central axis 1413 of toothbrush 1401. In the embodiment of FIGS. 14-17, a number of ribs 1470 are shown extending to the point of maximum extension 1475. In alternative embodiments, ribs 1470 may extend a decreasing distance from the handle central axis forward of the point of maximum extension 1475. The outermost edges of ribs 1470 are shown in FIGS. 14-17 as defining a flat surface forward of the point of maximum rib extension. However, other shapes are envisioned. The point of maximum rib extension beyond the thumb press box may or may not correspond to maximum cross sectional area of thumb press box 1417. In the embodiment of FIGS. 14-17, the point of maximum rib extension beyond the thumb press box 1475 a is aft of the maximum cross-sectional area of thumb press box 1417. However, other embodiments are envisioned in which the point of maximum rib extension beyond the thumb press box may be forward of the maximum cross-sectional area of thumb press box 1417. Ribs 1470 may have a curved or flat outer surface, for example. Further, the point of maximum rib extension may be different for each ridge. For example, ribs 1470 may extend further on one side of toothbrush 1401.

FIGS. 18A-18F depict a component (overmoulding) of thumb press section 1413 b according to different embodiments and/or states of manufacture. The overmoulding is incorporated into and defines the exterior shape of the thumb press section 1413 b of toothbrush 1401. FIG. 18A depicts ribs added to flat surfaces, FIG. 18B depicts dimples added to flat surfaces, FIGS. 18C-18F depict the flat surfaces.

FIGS. 19 and 20 show an embodiment of the skeletal structure 1902 of toothbrush 1901 having longitudinal axis 1951. The skeletal structure 1902 can be made out of a single piece of material or multiple pieces that are joined together. The skeletal structure 1902 may be made from a relatively stiff, yet flexible material. The skeletal structure 1902 is shaped to support the overmoulding (e.g., as shown in FIGS. 18A-18F) and to help define the final shape of toothbrush 1901. The skeletal structure 1902 may be completely or partially covered by the overmoulding. Although the skeletal structure 1902 helps define the final shape of the toothbrush 1901, the final shape of the toothbrush 1901 may not be the same as the skeletal structure 1901. For example, the skeletal structure 1902 includes curved ribs 1914. However, the final exterior shape of the toothbrush 1901 can be curved or flat, depending on the overmoulding.

Skeletal structure 1902 includes a handle 1913, which includes a palm grip section 1913 a, a thumb press section 1913 b, and a valley interface section 1913 c between the thumb press section 1913 b and the palm grip section 1913 a. The ribs 1914 may be formed along at least a portion of handle 1913.

Skeletal structure 1902 also includes a brush head 1910. Brush head 1910 includes bristle holes 1950 adapted to receive bristles.

FIG. 21 is a cross-section of handle 2013 of FIG. 20, along line A-A. While handle 2013 is referenced in FIG. 21, similar discussion and features are applicable to handle 1913, as shown in FIG. 19. With reference to both FIGS. 20 and 21, handle 2013 includes ribs 2014 that extend most of the length of the handle 2013. Ribs 2014 are shown with a curved exterior shape 2015. In the embodiment of FIG. 21, the ribs 2014 include a slot 2016 that extends through most, but not all ribs 2014. The ribs 2014 are also shown as having a uniform thickness and being evenly spaced. However, some ribs may be thicker, thinner, or combinations thereof, than other ribs depending on, for example, the strength needed. The ribs 2014 may also be non-uniformly spaced along the handle 2013. Still further, the space between ribs 2014 may be increased, decreased, or spaced randomly, depending on desired characteristics of the handle 2013.

In the embodiment shown in FIGS. 19 and 21, the overmoulding can be made out of a thermoplastic elastomer (TPE), such as a polyolefin (e.g., polypropylene) based TPE. For example, a TPE may be moulded over the skeletal structure 1902 by any of various plastics molding techniques known to those skilled in the art. Overmoulding onto the skeletal structure 1902 may be used to form a variety of topologies on the outer surface of the resultant toothbrush. For example, overmoulding may form a toothbrush having a topology in accordance with that described in FIGS. 14-17 (e.g., a thumb section having ridges and thumb presses as described).

FIGS. 22-25 depict an alternative embodiment of handle 2213 having ribs 2214 that are flat instead of curved (i.e., having a flat exterior shape 2215) with slot 2216. FIGS. 23 and 24 show a cross-section of the handle 2213. The ribs 2214 are shown as having a uniform thickness and being evenly spaced. However, individual ribs could be thicker, thinner, or combinations thereof than other ribs, depending on, for example, the strength needed. The ribs 2214 may also be non-uniformly spaced along the handle 2213. Still further, the spaces between ribs, slot 2216, can increased, decreased, or spaced randomly, depending on desired characteristics of the handle 2213.

It should be noted and understood that any specific feature or combination of features illustrated in or introduced FIGS. 14-25 (or described in the claims submitted below), and\or discussed in accompanying description, may be combined with or incorporated with or any other feature(s) or embodiment(s) described or illustrated in any other figure provided herein. For example, features of the intermediate section in any of FIGS. 14-17 and/or the ribs and skeletal structure of FIGS. 19-25 may be incorporated with a toothbrush, handle, or other component previously described or introduced in respect to any of FIGS. 1-13.

The foregoing description has been presented for purposes of illustration and description of embodiments. It is to be noted that this description is not intended to limit the disclosure to the various systems, apparatus, structures, and methods disclosed herein. Various aspects of the disclosure, as described above, may be applicable to other types of toothbrushes and in combination with other toothbrush components. For example, the fluid dispensing systems may be incorporated in other toothbrushes having a different brush head design. Conversely, the brush head configuration illustrated in FIGS. 1-8 may be changed, without departing from the spirit of the disclosure. Furthermore, the brush head configuration may be employed with other toothbrush components different from that described in the embodiments. Such variations of the disclosure will become apparent to one skilled in the relevant consumer products or dental, upon provision of the present disclosure. Consequently, variations and modifications commensurate with the above teachings, and the skill and knowledge of the relevant art, are within the scope of the present disclosure. The embodiments described and illustrated herein are further intended to explain the best modes for practicing the invention, and to enable others skilled in the art to utilize the embodiments with various modifications required by the particular applications or uses of the present disclosure. 

1. A toothbrush comprising: an elongated handle; a brush head supported by the handle, the brush head having a base and a plurality of bristles that extend from the base to form a contact surface elevated from the base; and the handle including a thumb press section.
 2. The toothbrush of claim 1, further comprises a stem coupled between the handle and the brush head.
 3. The toothbrush of claim 1, wherein the thumb press section comprises a plurality of thumb presses.
 4. The toothbrush of claim 3, wherein the thumb press section comprises a plurality of ridges interposed between the thumb presses.
 5. The toothbrush of claim 3, wherein the thumb presses are generally flat surfaces.
 6. The toothbrush of claim 3, wherein each thumb press comprises spaced-apart dimples protruding from a surface thereof.
 7. The toothbrush of claim 4, wherein each ridge comprises a plurality of spaced apart ribs protruding from a surface thereof.
 8. (canceled)
 9. The toothbrush of claim 1, wherein the handle further includes a palm grip section and a valley interface section, the valley interface section positioned between the thumb press section and the palm grip section.
 10. The toothbrush of claim 1, wherein said handle and said brush are positioned about a longitudinal centerline.
 11. (canceled)
 12. The toothbrush of claim 7, wherein said ribs include a series of longitudinally spaced apart ribs.
 13. (canceled)
 14. The toothbrush of claim 7, wherein each sequential pair of said pluralities of ribs are spaced apart by one of said thumb press sections.
 15. (canceled)
 16. The toothbrush of claim 3, wherein at least one thumb press is provided at an angle corresponding to a predetermined orientation of the brush head, said angled thumb press being part of a brush head orientation guide.
 17. (canceled)
 18. The toothbrush of claim 3, wherein the thumb press section includes a plurality of angularly spaced-apart thumb presses providing a predetermined orientation guide.
 19. (canceled)
 20. (canceled)
 21. The toothbrush of claim 4, wherein the ribs are of varying height along a longitudinal direction.
 22. The toothbrush of claim 4, wherein said ribs are disposed on distal portion of said thumb press section proximal to a palm grip section of said handle, such that a forward part of said thumb press section extending forwardly of said distal portion is free of said ribs.
 23. The toothbrush of claim 4, wherein said ridges extend a full length of said thumb press section.
 24. The toothbrush of claim 4, wherein said ridges include a forward portion and a distal portion, the distal portion being equipped with a series of circumferentially-directed spaced apart ribs and the forward portion being free of ribs.
 25. (canceled)
 26. (canceled)
 27. The toothbrush of claim 7, wherein said ribs are hollow.
 28. A toothbrush comprising: a skeletal structure including a skeletal structure of a brush head, a skeletal structure of a handle, and a skeletal structure of a stem coupled between the skeletal structure of the handle and the skeletal structure of the brush head. 29-40. (canceled)
 41. A method of manufacturing a toothbrush comprising: providing a skeletal structure including a skeletal structure of a brush head, a skeletal structure of a handle, and a skeletal structure of a stem coupled between the skeletal structure of the handle and the skeletal structure of the brush head; coupling bristles to the brush head of the skeletal structure; and overmoulding a thermoplastic onto the skeletal structure, encasing at least a portion of the skeletal structure. 